Resilient tire



May 18,1926., $85,074

w. s. BISELl ET Al.

RESILIENT TIRE Filed June 4, 1925 if j.

Patented bday ld, i921.-

-`WIL-EBEE S. BISEL AND BAUDRY, OF'ATCHSON, KANSAS.

EESXLIENT TIRE.

*Application filed June 4, 1925. Serial No. 34,900.

rfhis invention relates to an improved resilient tire for motor vehicles andy seeks, amongother objects7 to provide a tire which will eliminate the troubles of puuctures and blow-outs While, at the saine tune, the tire will be possessed of substantially the same cushioning qualities as a lpneumatic tire.

The invention seelrs, as a further object, to provide a tire having a central cushioning element embodying a Aplurality of nested spirally Wound annular cushioning springs for imparting resiliency to. the tire., but.

wherein means Will be provided for :preventing undue lateral distortion of said springs.

Another object of the invention is to providD a tire wherein the cushioning element, when embedded in the tire, will be yieldably supported by a core lying vrithin said element, and wherein the tie strap employed for holding,` the springs of the cushioning element against lateral distortion, will be embedded in said core euch a way as to permit limited independent expansion or contraction of the strap Well limited independent thereof.

And the invention seelts, a still further object, to provide a tire vwherein the cushioning element may be readily formed on a mandrel and later embedded in the tire and secured when the tire is vulcanized so that a homogenous structure Tvill be produced.

@ther and incidental objects will appear hereinafter.

In the accoinpanyingdrawings:

Figure 1 is a sectional perspective view of our improved tire.

Figure 2 is an enlarged detail sectional view ntaken through the cushioning element.

Figure 3 is a fragmentary perspective vien7 showing the manner in which the ends of the tie strap are connected.

In carrying` the invention into effect. We employ a cushioning element- Which is composed. of a plurality of superposed thin layers or Wrappings'l of fabric and rubber embedding' a number of spirally Wound cushioning springs. In our copending` application, filed J une 4f, 1925, Ser. No. 35%007, We have illust-rated the manner in which ythe cushioning element is formed.

Centrally of the cushioningl element is a Wrapped layer 10 of fabric forming a tube to receive a core, and Wrapped about the 'layer 10 is av layer of soft rubber 11. found spirally around the layer 11 of rubber is coil spring 12 of relatively small resilient Wire, and Wrapped about said spring, as best seen in Figure 27 is a layer 13 of soft rubber like the layer 11. As will be olfserved, the layers 11 and 13 of rubber embed the spring and meet between the ,turns thereof for spacing the turns of the ,spring apart'. Vilrapped around the layer 13 of rubber is a layer 1d of fabric about which is Wrapped a layer 15 of soft rubber, and Wound spirally around the layer 15 of rubber is a coil spring 16 like the coil springl 12. Trapped about the coil spring` 1G is a layer 1,7 of soft rubber cooperating with the layer of rubber 15 for enibedding the spring, and Wrapped around the layer 1T of rubber is a layer 1.8 of fabric. itraoped yaround the layer 1S of fabric are superposed layers 19 and 2() of soft rubber, like the layers 15 and 17, and Vembedded by the layers 19 and 2O is a coil spring 21 like the springs 12 and 116-. Wrapped around the layer 2() of rubber is a layer 22 of fabric about which is Wrapped a layer 23 of soft rubber, and Wound about .the layer of rubber 23 is coil Spring 2e, like the other springs. `Wrapped around ithe spring' 2li is a layer 25 of soft rubber cooperating ivith the layer of rubber 23 to embed the spring. The layers 23 and 25 of rubber are like the other rubber layers and Wrapped around the layer 25 is a layer 2G of fabric. Wrapped around the layer 26 of fabric is a layer 27 of soft rubber, and Wrapped around the layer 27 is a layer 28 of fabric forming a cover for the cushioning' element.

Filling the tube formed centrally of the cushioning element by the layer 10 of fabric, is a core 29 of soft rubber and embedded iu the core are concentric inner and outer reinforcing rings 3() Which are also of soft rubber. Embedded in the core to lie midivav between the rings 30 is a resilient inetallic tie strap 31, the ends of which as shown in Figure 3. riveted together. The tie strap thus provides a continuous annular band disposed in concentric relation to the reinforcing rings 30, and Wrapped about the strap is a fabric 'envelop or sheath 32 of superposed layers.

Formed about the cushioning element. is a rubber carcass 33. ln the present instance, We have shown the carcass as composed exclusively of rubber but it is to be understood that this carcass may, if desired, be formed of rubber and fabric laminations. The carcass is vulcanized about the cushioning element and the vulcanizing of the carcass will,

fil

of course, also serve to vulcanize the rubber layers of the cushioning element as well as the rubber ot the core 29 and reinforcing rings o) so that a homogenous structure is produced. Supporting the carcass is a channel shaped band having side flanges to engage beads 3G at the base of the carcass. Preferably, the carcass is vulcanized on the said band and7 as will be observed the band is shaped to provide a demountable wheel rim so thatthe tire may be readily applied to wheel or removed therefrom.

)is will now be seen7 the springs l2, 1G, 2l and Q4 of the cushioning element will imi. resiliency to the tire while said springs will be nf'acerl and supported internally bv the vieliflable cere Q9. rlhe core, in turn7 will be braced and reinforced by the rings 30. which will tend to prevent undue lineal :lretching oi.: the core adjacent the inner and outer periplieries thereo'l". I `urtherm i re, the core will be braced and supported b v the tic .strap ill, which will also tend to prevent undue lineal stretching ot' the core and since lre strap is rigidly conneccd at its ends,said .strap will also tend to preventl undue lateral distortion of the springs of the cushioning' element. iis will be observed the sheath 32 of the ti-e strap serves to isolate said strap from the core .so thatthe strap is not connected directly to the core. Accordinglys limited individual iiexing of the strap will be permitted within the sheath, so thatJ the strap may readily yield to conform the flexing of the springs of the cushioning element.

Having thus what we claim is:

l. il resilient tire includingr a tubular cushioning element composed of layers ol: fabric wrappinos and intervening pairs ot contacting rubier Wrappings embedding spirallT wound springs therebetween, a jvieldable core lilling said clement, and a carcass enclosing said element.

2. A resilient tire, comprising a core of soft rubber having a metal strap inserted therein between concentric reinforcing rings, alternate layers oi fabric and rubber enveloping the core, the layers of rubber havingspirally 'found springs embedded therein7 and a carcass enclosing the several layers of fabric and rubber.

3. A resilient tire including cushioning element composed of layers' olf lfabric wrappings and intervening pairs oi contacting rubber wrappings emheddin spirallyv wound springs therebetween, a yieldable core l'illing Said element., an annular inetallic tie strap embedded in the core, yieldable reinforcing rings embedded in the core near the inner and outer peripheries thereol, a sheath enclosing the strap and iso-- lating the strap for limited independent ilexing movementl` and a carcass enclosing said element.

In testimon)v whereof we aliitV our signatures.

described the invention,

winnen :eisen [1.. 5.] Geenen BiiUnnY. n. Si

a tubular 

